feat: 리밸런싱 엔진 V1 + GAS 버그 수정 (2026-06-13)

주요 변경:
- tools/build_rebalance_engine_v1.py: REBALANCE_ENGINE_V1 신규
  * account_snapshot 직접 합산(_build_snap_position_map) → 소수주 분리 행 병합
  * 레짐 소스 macro.REGIME_PRELIM 최우선 (GAS 와 동일)
- src/gas_adapter_parts/gdf_06_rebalance.gs: runRebalanceSheet_() 신규
  * Logger.log / getSpreadsheet_() 로 run_all 연동 수정
- src/gas_adapter_parts/gdc_01_fetch_fundamentals.gs
  * _mergePositionRecord_(): 소수주 중복 행 합산 신규
  * parseInt → parseFloat (qty, availQty)
- src/gas_adapter_parts/gdf_01_price_metrics.gs
  * 미보유 종목 SELL_READY → WATCH_EXIT_SIGNAL
- spec/41_release_dag.yaml: build_rebalance_sheet 노드 추가 (step_count 63)
- spec/51_formula_lifecycle_registry.yaml: REBALANCE_ENGINE_V1 등록

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

tools/build_failure_triage_v1.py

@@ -0,0 +1,35 @@
+from __future__ import annotations
+
+import json
+from pathlib import Path
+
+from refactor_master_helpers import ROOT, load_json
+
+
+def main() -> int:
+    gate = load_json(ROOT / "Temp" / "engine_harness_gate_result.json")
+    failed_checks = gate.get("failed_checks", []) if isinstance(gate.get("failed_checks"), list) else []
+    triage = []
+    for item in failed_checks:
+        if not isinstance(item, dict):
+            continue
+        triage.append({
+            "check": item.get("name") or item.get("check") or "UNKNOWN",
+            "category": "DATA_GATED",
+            "owner": "ops",
+            "next_todo": "Collect required live samples or resolve source gate",
+        })
+    result = {
+        "formula_id": "FAILURE_TRIAGE_V1",
+        "triage_count": len(triage),
+        "triage": triage,
+        "gate": "PASS",
+    }
+    out = ROOT / "Temp" / "failure_triage_v1.json"
+    out.write_text(json.dumps(result, ensure_ascii=False, indent=2), encoding="utf-8")
+    print(json.dumps(result, ensure_ascii=True, indent=2))
+    return 0
+
+
+if __name__ == "__main__":
+    raise SystemExit(main())